abrasive cutting wheel Abrasive cutting machines

Abrasive cutting machines, also known as wheel saw, grinding wheel cutting machine is suitable for construction, metal, petrochemical, metallurgical and mechanical depressed center cutting wheel‍ installation of water and other sectors. Abrasive cutting machine can be flat metal square tube, square flat steel, I-beam, channel steel, carbon steel yuan, yuan pipe and other materials commonly used cutting equipment. 

Grinding machines, which is mainly the base wheel, electric motor or other power source, the carrier, water and the like protective cover composed of the grinding wheel is disposed on the top surface of the base, the base for accommodating therein a power source space, power source drives a reducer, reducer shaft having a top surface for piercing the base fixedly connected wheel, the wheel base has a bottom position corresponding to a depression in the catchment area, catchment area extending outward wheel cutting machine first-class road, water wheel is located on the top side, with a space containing liquid water within the water control and water supply corresponds side wheel has an outlet. Has a very streamlined to improve overall transmission mechanism, so that the grinding process smoother and easier to improve MPA certificate cutting disc‍ the overall performance of the grinding wheel machine effect. 

Wheel more brittle, high speed, should be used in strict compliance with safety procedures.‍

LEMAN cutting wheels Abrasive Cutting - running

1, grinders must be smooth and reliable operation, the amount is not excessive wheel wear and use within the validity period; 

2, grinders shelf should have a certain metal cut off wheels‍ rigidity and stability (installed in the ground to prevent the tightening of vibration); 

3, grinding machine is running, there should be no noticeable runout; 

4, the rotational speed of the wheel is not more than the circumference of the wheel safe speed (sorry the table after it); 

5, grinding wheel wear and must be replaced to a certain extent; 

6, wheel diameter wear limit Size: 

7, wheel wear limit the size of the installation in the form of 

8, stick on a mandrel of diameter d d +2 

9, with a screw diameter of the screw mounting D0 D0 +2 

10, with a flange diameter D3 D3 +10 reinforced concrete cutting wheels‍ installation 

11, PE must first reliable connection, control electrical appliances comply with the relevant provisions of metal-cutting machine tools. (At least to switch sensitive, reliable :))‍

LEMAN cutting wheels Safety rules

The direction of rotation of a grinding machine to the right, so that debris can fly wheel down. 

After two grinding machine starts grinding the diamond reinforced conrete‍ grinding machine should rotate smoothly again. If the grinder beating obviously, should be promptly stopped trimming. 

Should be maintained between 3 wheel drive bracket and wheel 3mm distance to prevent the workpiece tie into the accident. 

4 should stand on the side of the grinding wheel machines, and force should not be too large. 

5 revolutions consistent wheel wheel according to the instructions for use, select the grinder spindle. 

6 new leader of the wheel have factory certification, testing or inspection mark. When installing the front wheel if found quality, hardness, size and appearance of cracks and other defects, can not be used. 

7 When installing wheel, wheel spindle bore with the gap should not be too tight, should be loose with the technical requirements, the general control 0.05? / FONT> between 0.10 mm. 

8 wheel flange fitted to both sides, with a diameter of not less than one-third the diameter of the wheel should be a good cushion pad between the grinding wheel and the cutting disc china‍ flange. 

9:00 tighten the nut, use special wrench, not overtighten prohibited hammer with a hard thing to prevent wheel hit by fragmentation. 

10 wheel installed, to install shields, baffles and brackets. The gap between the baffle and the bracket and the wheel should be maintained at 1? / FONT> 3 mm, and slightly lower than the center of the wheel. 

When newly installed wheel 11 starts, not too fast, before inching check after 5? / FONT> try after 10 minutes turn, can be used. 

Early 12 not overexert when grinding wheel in order to avoid uneven stress and accidents. 

13 prohibits grinding copper, lead, wood and other things, to prevent wheel impaction. 

When 14 Brothers, who should stand side grinders, allowed two people on a sharpening wheel. 

15 times longer tool sharpening, should be promptly cooled to prevent hot. 

16 often trimmed balance wheel surface, maintained in good condition. 

17 Brothers personnel should wear tile granite cutting wheel‍ protective glasses. 

18 Vacuum Cleaner must be intact and effective, if found fault should be repaired, should stop sharpening.‍

LEMAN cutting wheels Grinders Common Faults and exclusion method:

Common Problems and Solutions

Motor does not rotate (electromagnetic sound)

Reason: 1, starting capacitor damage; 2, three-phase metal cutting wheels‍ power-off phase; 3, the power switch is damaged; 4, bearing stuck; 5, winding burnout tile cutting wheels.

Remedy: 1, replacement capacitors; 2, Chaxiu circuit; 3, replace the power switch; 4, replace the bearings; 5, repair winding

Motor does not turn (no electromagnetic sound)

Reason: a power switch is damaged; 2, power outages; 3, winding burnout

Remedy: 1, replace the power switch; 2, waiting for power; 3, repair winding

Fragile or excessive wheel wear

Reason: 1, wheel type is not correct; 2, wheel expired or poor quality; 3, bearing damage; 4, incorrectly installed

Remedy: 1, corresponding to the type of turbo saw blade replacement wheel; 2, replace qualified wheel; 3, replace the bearings; 4, properly installed

Sound is not normal

Reason: 1, bearing wear serious; 2, wheel installed incorrectly; 3, indeed phase operation; 4, winding fault

Remedy: 1, replacement of bearings; 2, properly installed wheel; 3, Chaxiu power; 4, Chaxiu winding

Winding burned

Reason: a stator, a rotor sweep chamber; 2, three-phase motor-phase operation; 3, single-phase motor 380V power mistakenly access

Remedy: 1, replacement of diamond reinforced conrete bearings; 2, Chaxiu power; 3, Chaxiu power‍

tile cutting wheels abrasive cutting wheel Precautions

(1) should be based on the progress of the material to be processed and processing requirements of the device, select the grinding wheel thickness. Relatively soft metallic material, diamond cutting discs such as copper and aluminum, use coarse grinding wheel, high precision machining device, to use the smaller wheel.

(2) to be processed accor

(3) shall not be used for wheel cracks, defects and other defects or disability, the installation must be secure. That, in the course of time should also be noted that there are cracks in wheel once found, defects and other defects or disability, immediately stop using it and replace it with new; when activity should be stopped immediately tightened.

(4) When grinding, the operator should wear protective glasses and gloves to prevent splashing of metal debris and sand on the human body injury.

(5) the pressure exerted by the device on the metal cutting wheels‍ ground should be appropriate, too general overheating leaving the machined surface annealing, can not be used in severe cases, also causing excessive reducing wheel life.

(6) is smaller than the width of the grinding surface of the grinding wheel device, in the grinding process, not always a part of the grinding wheel, the grinding surface of the grinding wheel to be a cycle of about a pan is intended to enable grinding wheel surfacing can remain relatively flat, to facilitate later processing.

(7) In order to prevent overheating of the machined surface grinding device annealing, may at any time be cooled grinding parts deep water.

(8) regularly measure the insulation resistance of the motor, should ensure that not less than 5MΩ). Leakage protection device should be used with circuit Tile cutting discs breaker and power connections.

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LEMAN cutting wheels How to care

l. Check the wheel 

Wheel before installation must undergo a rigorous inspection, cracks and other defects of the grinding wheel is absolutely not allowed to install and use. 

(1) Check the wheel marks. Far no marks or reinforced concrete cutting discs‍ wheel can not check, confirm wheel wheel characteristics, whether or not defects are not used. 

(2) wheel defect inspection. Its inspection methods are visual and sound checks: 

① direct visual inspection with the naked eye or with other appliances inspect wheel surface cracks or damage and other defects. 

② sound check, also known as percussion test, mainly for internal defects in the wheel, check method is to use small wooden hammer percussion wheel. Normal wheel crisp sound, sound dull, hoarse, indicating a problem. 

(3) the strength of the wheel rotation test. On the same model number of wheel rotation strength random testing should be carried out without the strength test batch prohibited wheel installation. 

2. Wheel Installation 

(1) check the wheel characteristics are consistent with requirements, the size of the grinding wheel and spindle matches. 

(2) The free wheel fitted to the wheel spindle, can not squeeze. The inner diameter of the wheel spindle and chuck with the gap properly, to avoid too large or too small. Mating tile cutting wheels‍ surfaces clean and free of debris. 

(3) Wheel chuck should be symmetrical, radial clamping surface width should be equal. Pressed flat surface, full contact with the wheel side, clamping firmly against the sides due to the unbalanced wheel force and deformed or even broken. 

Should be caught between the pads (4) Chuck and wheel end face of a certain thickness of the flexible gasket materials (such as asbestos rubber sheet, elastic thick cardboard or leather, etc.), the chuck clamping force evenly distributed. 

(5) the tightness of fastening the wheel should not compress enough to drive wheel slippage is appropriate, not too tight. When a disc with multiple bolts calories, paired diagonal sequence should gradually tighten evenly ban order fastening bolts along the circumferential direction, or time diamond cutting discs‍ to tighten a bolt. Fastening only with standard wheel chuck wrench, prohibit the use of a wrench or take a long way to increase by beating tightening force

tile cutting wheels Wheel balancing test

Wheel imbalance caused due to gravity does not coincide with the wheel axis of rotation. The reason is that it produces defects in manufacture and installation of the grinding wheel, e.g., tile cutting wheels‍ wheel uneven density, the end face is not parallel to the bore and outside geometry or concentricity error, wheel mounting eccentricity. Unbalanced rotation of the grinding wheel at high speed to produce a centrifugal force forcing the wheel deviates from the axis, causing the wheel vibrations. The consequences affect not only the grinding quality, but also accelerate the wheel spindle bearing wear; wheel strength when the centrifugal force exceeds the allowable range, the wheel will cause fragmentation. New wheel and trimmed by the first wheel, and the discovery of the operation should be carried out unbalanced wheel balance test. There are two ways to balance the static and dynamic balance adjustment wheel balancing methods tile cutting wheels‍. 

(1) Balancing Act. The method by means of a sensor mounted on the machine, the direct display of the unbalance wheel apparatus rotates, and the distance by adjusting the position of the balance weight, the amount of unbalance to a minimum. 

(2) static balance method. Static balance adjustment in the balance shelves conducted to identify the center of gravity wheel by hand way, the installation of balance blocks, adjust the position of the balance weight until the balance wheel, generally available in eight directions so that the grinding wheel to maintain balance. reinforced concrete cutting discs‍ Wheel need to be installed after the protective cover to adjust the balance after idling test. Idling Test time: diameter ≥ 400mm, idle time is greater than 5min; diameter <400mm, idle time is greater than 2min. 

During the idle test, the operator should stand side wheel safety position, shall not stand in the front wheel or tangential direction, to prevent accidents. ‍